air brake
brake operated by compressed air; surface projected into an airstream for reducing the speed of an airplane
Air brake
Air brake
A railway brake operated by condensed air.
Webster's Revised Unabridged Dictionary (1913), edited by Noah Porter.
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Air Brake
A brake in which the mechanism is actuated by manipulation of air pressure. The term is often used to describe brakes that employ air under pressure above atmospheric, in contrast to vacuum brakes, which employ pressure below atmospheric.
(TRB1)
air brake
air-brake